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International Automotive Technicians Network
Re: Rough idle, No codes
Posted to Technical Tips Forum on 1/11/2021

Hi Chris,.

The RC test is one of many test that can be performed, but has its gray areas.

For example: I recently had a Ford 5.4 3 valve engine with P0307 code and a #7 misfire in Mode 6 data. It had a slight misfire that could be felt at idle. The vehicle... Login to read more.